D. Dasha and Very Difficult Problem 题目连接： http://codeforces.com/contest/761/problem/D Description Dasha logged…

B. Far Relative’s Problem 题目连接： http://www.codeforces.com/contest/629/problem/B Description Famil Door wants t…

C. Predict Outcome of the Game 题目连接： http://codeforces.com/contest/451/problem/C Description There are n games…

C. Looking for Order 题目连接： http://www.codeforces.com/contest/8/problem/C Description Girl Lena likes it when e…

C. Road Improvement 题目连接： http://www.codeforces.com/contest/638/problem/C Description In Berland there are n c…

B. Memory and Trident 题目连接： http://codeforces.com/contest/712/problem/B Description Memory is performing a wal…

E. Sasha and Array 题目连接： http://codeforces.com/contest/719/problem/E Description Sasha has an array of integer…

B. DZY Loves Modification 题目连接： http://www.codeforces.com/contest/446/problem/B Description As we know, DZY lo…

B. Mike and Shortcuts 题目连接： http://www.codeforces.com/contest/689/problem/B Description Recently, Mike was ver…

A. Recycling Bottles 题目连接： http://www.codeforces.com/contest/671/problem/A Description It was recycling day in…

A. Watermelon 题目连接： http://www.codeforces.com/contest/4/problem/A Description One hot summer day Pete and his …

B. New Skateboard 题目连接： http://www.codeforces.com/contest/628/problem/A Description Max wants to buy a new ska…